Click on "contact us":
You'll be asked a few questions. Use the following suggested answers:
Question 1: LinkedIn prohibits the use of third-party software or browser extensions that automate activities on LinkedIn. If you believe your account has been inadvertently restricted, tell us why.
➔ I’ve just been using linkedin like usual
Question 2: Help improve your LinkedIn experience and list the third-party programs, services, or plug-ins you currently use to automate activities on LinkedIn.
➔ VPN
⚠️ Never indicate that you are using an automation tool.